Water pushes against the buttress dam, but the buttresses push back and prevent the dam from toppling over. The weight of the buttress dam also pushes down into the ground.

研究进一步在肺癌脑转移动物模型中证实，靶向治疗和CTLA4单抗联合用药能够有效激活T细胞，克服免疫逃逸，为临床克服肺癌脑转移靶向治疗耐药 ...

The environmental jobs program is vulnerable to Republican gains this week. Democrats and environmental advocates want to make a climate jobs program the law of the land — and they may be ...

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在非小细胞肺癌中，间变性淋巴瘤激酶（ALK）基因重排一直备受瞩目。 一方面，患者都不可避免地面临耐药性问题，需要更有效的新疗法；另一方面 ...

This allows water to run off the leaves quickly without damaging or breaking them. Buttress roots close buttress rootsA tree root that grows above the forest floor to provide nutrients and support.

组合运用政策“工具箱”，精准施策、靶向发力 “通过多种政策工具和措施，加大逆周期调节，刺激内需，促进投资，稳定就业，能有效对冲经济 ...

刘煜辉评财政部系列政策：直击问题的靶点 抓住了整个全局的“急所”和“腰眼” 刘煜辉表示，地方政府债务问题已经直接牵涉到地方的正常事权 ...